METHOD FOR X-RAY ASSESSMENT OF TEMPERATURE CONDITIONS OF OPERATION OF TUBULAR ELEMENTS OF BOILERS Russian patent published in 2014 - IPC G01N23/20 

FIELD: testing equipment.

SUBSTANCE: tube element sample is prepared, as well as a standard from a piece of a pipe that has not been operated in the boiler, having similar composition and method of manufacturing, X-ray study of the standard is carried out in the thermocycling mode in the cycle "heating - cooling down to room temperature", it is used to build dependence of ratios of integral intensities produced under room temperature for two strongest diffraction lines that are not superimposed with diffraction lines of other phases from thermocycle temperature, X-ray study of the tube element sample is carried out under room temperature, for which they determine the ratio of integral intensities of the same two diffraction lines, ratios of integral intensities of diffraction lines in the sample and the standard are compared, and the temperature of operation of the tube element section is defined, accepting it as equal to the standard temperature at this value of the ratio of integral intensities.

EFFECT: provision of the possibility to realise method of determination of temperature conditions of operation of tube elements of boilers, which covers all types of steel, regardless of water regime of boiler operation, without damage of sample surface.

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